package com.xcc.cloud.gateway.config;

import cn.hutool.core.util.StrUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.time.LocalDateTime;

/**
 * 自定义filter，过滤掉非法的请求
 */
@Slf4j
@Component
public class MyLogGateWayFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        log.info("***************com in MyLogGateWayFilter: "+ LocalDateTime.now());
        String uname = exchange.getRequest().getQueryParams().getFirst("uname");
        if (StrUtil.isEmpty(uname)) {
            log.info("**************用户名为Null，非法用户****************");
            exchange.getResponse().setStatusCode(HttpStatus.NOT_ACCEPTABLE); //设置状态码
            return exchange.getResponse().setComplete();
        }
        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return 0;
    }
}
